Another old bookmark I found. It shows some of the extra-ordinary lengths that have to be taken to keep the Robert C. Byrd Green Bank Telescope free from RF interference.
“I’m 1 mile east of command central in the Quiet Zone, sitting in a Dodge pickup with Wesley Sizemore, Keeper of the Quiet. In a world saturated with radio waves, the Quiet Zone is a haven and an anomaly. A unique combination of geography and legislation has rendered its 13,000 square miles nearly free of electromagnetic pollution. Sizemore’s job is to keep it that way.”